room = loadImage("https://cdn.glitch.global/4af0062b-f4f2-4f2c-bf34-f79422fe1239/default.jpeg?v=1690929129992")

    }

    function setup() {

      cnv = createCanvas(400, 300);

      centerCanvas();

      mask_layer = createGraphics(width, height)

      img = createImage(width,height)

    }

    function draw() {

      if(frameCount % 300 == 0){

        mask_layer.clear()

      }  mask_layer.rect(random(width),random(height),20,30)

      mask_layer.circle( random(width),random(height),map(mouseX,0,width,10,30))

      img.copy(room,0,0,room.width,room.height,0,0,width,height)

      img.mask(mask_layer)

      image(img, 0, 0,width,height)

    }

​

    function centerCanvas() {

      var x = (windowWidth - width)/2;

      var y = (windowHeight - height)/2;

      cnv.position(x, y);

    }

    function keyPressed(){

     if(key == 's'){

        saveGif("mask.gif",5)

      }

    }